Reverse Osmosis » Hydro-Logic » Hydro-Logic TDS Inline Monitor for Merlin GP

Highly efficient and accurate due to its advanced Microprocessor technology. Auto-Off function conserves battery power. The unit shuts off automatically after 20 seconds. Dual range - measures from 0-999 ppm, with a resolution of 1 ppm. From 1000 to 9990 ppm, the resolution is in 10 ppm increments, indicated by a blinking image. Comes factory calibrated. Comes equipped with 3/8" & 1/2" Quick Connect T-fittings for Merlin GP™ or Tall Blue for quick install. Measure the untreated water coming in vs. the purified water going out of your reverse osmosis system at any time. Limited 3 year warranty.